Fix Sending SMS Problems on iPhone 4S, 4 and 3GS [How to]

News 16.05.2012
Factory AT&T iPhone Unlock

I have received many questions about problems with sending SMS problems on iPhone 4S, iPhone 4 and iPhone 3GS. So I decided to help you to fix these issues. I show you how to fix the problem here below.

There are some tips that you can use to fix it. You can try to enter full area code and check the signal or reset network settings. You can also check your SIM card using other phone. You can restore iPhone or set it up as new iPhone from a back up. But if all mention above don’t work than follow my instructions to fix it in other way.

fix sending sms problems on iPhone

Note: When I was investigating the problem I saw that this method didn’t always work on iOS 5.1. Many users said that it worked but only day or two.

The SMS sending problem is in SMS center number, so we use some numbers to fix it.

Fix Sending SMS problem on iPhone 4S (4, 3GS)

Check your SMS center Number. To check it just enter the following numbers and press Call:


sms problem iPhone

After entering you must receive next message:

Setting Interrogation
Service Center Address
[here will be a number of your carrier's service center +1....]

sms problem iPhone 1

In my case the number of SMS Message Center is from AT&T +13123149810.

The SMS Message Center Number is a number that provides a entrance for transferring SMS messages between mobile phones.

No mobile call is enabled to send or get SMS messages however this number is needed for redirecting SMS messages via the network.

In case your Service Center number isn’t correct then you have the possibility to update it. All you need is to find your service center number – Service Center Address (if you don’t know then you can use Google to find it) and enter this:

**5005*7672*your Service Center number#

For example Servise Center address of AT&T is +13123149810 so enter like this:


After entering the following above (but using number of your Mobile service center) you have to receive next message:

Setting Succeeded
Service Center Address
No Address

sms problem iPhone 2

For number confirmation type the following:


sms problem iPhone 3

And that’s it. Now you mustn’t have any problem with sending SMS on your iPhone 4S, 4 and 3GS. I hope this guide was useful for you and now you can share this useful info with others.

Tell me please if it works, because I haven’t such problems on my iPhone and couldn’t test it. If something will go wrong I’ll try to help you. Tags: , ,

Комментариев: 16 to “Fix Sending SMS Problems on iPhone 4S, 4 and 3GS [How to]”

  1. nick says:

    i tried on my sprint 4s to use on Tmobile but it did not update it stayed the same shows any othe sugesstion ?

  2. Roseta says:

    please I need your help when I ask centre number in the phone
    the answer is +7 I'm really sad, I'll put in the trash the iphone 4s

  3. mIKE says:

    I also get the +7 when doing this! PLEASE HELPPPPPPPPPP!

  4. VIazZa says:

    thank you!!!

  5. Tasha says:

    Im having the same problem, I tried this about 2 hours ago and it worked, my phone turned off then on and stopped working, and the +7 keeps coming up, I need help! I have an unlocked sprint iPhone 4s under H2O Wireless

  6. xadamxk says:

    I used this method and did it before public tuts were available….
    Same problem occurred… this method did not fix the problem.
    But give it 2-3 days for your carrier to reset the network settings (automatically)

  7. Curlyy says:

    Nothing happened :/ everything came up like you said but nothing happen

  8. david says:

    hello. i followed your directions to the T, and i still cant send text messages on tmobile. please help me. what is weird is my older 3gs is running 5.01, and baseband 6.15. my new 3gs is running 6.0.1 and baseband 6.15 and the phone portion works fine. just cant send text messages. any help please?

  9. anugya says:

    this didn't helped..

  10. Randy says:

    Just download bitesms if your iPhone is jail broken…. It fixed my problem

  11. Ralph says:

    It didn't help!

  12. Marco says:

    i jailbroke my 3gs and am not able to see any messages that are sent to me they are all blank and am not able to send,i tried the instructions above and still nothing

  13. Rick says:

    Didnt help. Great Instructions but something is missing, such as sending messages only. Receiving messages were fine. I think the Techs who designed iphones do this to annoy the hell out of people, and it sucks.

  14. whitney says:

    It tried it on my iPhone 4s from simple mobile n I still can't send pics

  15. Alexander says:

    i cannot do any of this on my Sprint iPhone 4. the first step says "Failed No Address" and so I looked up the SMS Service Number for Sprint and tried to do the 2nd step but it also FAILED =/